Industrial Safety review (Q&A)

REVIEW QUESTIONS&ANSWERS
Name of module: Industrial safety
------------------------------------------------------------------------------------------------- -------Question 1:
What are the steps to treat people with electricity accidents?
There are 2 basic steps to cure electricity accidents including:
1) Separate the victim from the circuit:
- Seeing someone with an electric accident must find a way to separate the victim from the circuit.
To save the victim and avoid electric shock, the rescue of the victims must do the following:
In case of cutting circuit:
- Cut off electricity with the nearest closed and cut equipment such as: electric switch, fuse, circuit
breaker, ...
- When cutting electricity, pay attention:
a) If the circuit is cut, the lights are provided in the dark, it must be prepared immediately
for other light sources to replace.
b) If the person who has an accident is high, he / she must be prepared to support, when
that person falls.
2) Cure the victim after being separated from the circuit:
Immediately after separating the victim from the circuit, based on the situation of the victim to
handle appropriately as follows: (3 cases)
a) The victim has not lost consciousness:
If the victim has not lost consciousness, only being in a coma for a moment, his heart still
beat, breathing weak, he must let the victim go to a breathable and quiet place to take care
of the regaining consciousness. After that, invite the doctor or gently take it to the nearest
medical agency for care.
b) The victim lost consciousness:
If the victim lost his perception but still breathed lightly, his heart was weak, he placed the
victim in a breathable, quiet place (it was cold, he had to put in a windy place), expanded
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his pants, shirts, waistes, and dropped. In the mouth, smell the urine, friction of the whole
body to heat up and invite the doctor to take care of the doctor.
c) The victim stopped breathing:
If the people no longer breathe, the heart stopped beating, the whole body seemed like
death, they had to take the victim to a breathable place, expand clothes, waist, drop in their
mouths and pull the tongue (if the tongue indented) . Conducting artificial respiration, Ha
slightly blown, must be done continuously, persistent until the opinion of the doctor
decided to decide.
Question 2:
What are the safety measures when climbing columns to check the electric meter index?
1. There must be a working order.
2. The group of checking and recording the meter index must have at least 2 people.
3. Working vehicles are mobile ladders (made of bamboo, wood or aluminum).
4. When going up, down the movement of the same person to keep the ladder firmly.
5. Must use low-voltage test pen to test all metal objects around; The places can touch because
they may have electricity.
6. For cramped working positions, multiple meter boxes, easy to touch the electric objects, they
must cut electricity before climbing.
7. Must hook the belt into a firm fixed position, ban the belt hook into the mobile ladder.
8. Do not stand on the ladder to move to a new location.
Question 3:
What are the safety measures when installing wires and switching and protecting
equipment?
1) The conductor installed indoors must use an insulating wire, do not use ceiling cords to be
stuck indoors.
2) Using ceiling cord to pull the main axis in the factory workshops with an iron frame of 5 m or
more but must go on porcelain, pulley size 70 x 70 mm or more and certainly have signs " Stop!
Deadly dangerous " near that line.
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3) The wire through the roof of tile, leaves, ... must use the cable covered with lead, PVC.
4) Line with neutral point 380V, 380/220 V, between the lead of the cable, the external wire boxes
of the device must be connected to each other and connected by copper wire with a section of up
to 2,5 mm2 of the grounding wire of the cable shell must wrap many rounds and weld again.
5) When connecting the wire, it must be staggered and there is an insulating tape wrapped on the
connection.
6) Prohibiting the use of small cross-sectional wires on large-capacity tools, easily causing
incidents, causing fire.
7) Electric switching knives must be placed in the root, convenient, not placed in wet places.
8) The fuse must have a lid, lead wire must be fitted with the standard, prohibited from using
copper or other wires instead of lead cord.
9) Power consumption in houses, organizations must be suitable for the conductor section
provided at that place, the protective lead must be placed according to the selective level, meaning
that there is a touch of the wire, the place of consumption Must be broken first to ensure the safety
of the line.
Question 4:
What are the safety measures when removing watches, relays and information equipment?
1) There must be a working card or working order of the operation management unit as prescribed
when working at high -voltage distribution tanks indoors and outdoors.
2) Must have a working order (due to operation management or work unit) in places where there
is only an electric conductor in the case of a low -voltage conductive unit, in case of high -voltage
conductive parts. Then these parts must be shielded, protected, and must be fully recorded in the
diary to operate the content of the tasks done.
3) Those who do this work must have 4 or higher levels of electrical safety and have been trained
in the experiment.
- Specific regulations when removing watches, relays and information equipment:

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1) When checking the control circuits, it is allowed to allow an employee with a safety level 4 or
more of the working unit at the tank with high voltage, this person must comply with the safety
regulations when working. In high voltage electrical equipment, no power cut in this process.
2) Working in measurement and protection circuits that are electricity must apply the following
measures:
a) All secondary coils of the CT variable, VT transformer must have a fixed ground wire.
b) Prohibit the secondary coil circuit of the current transformer and let the secondary
transformer coil short circuit.
c) When disassembling the electric meter at the voltage level of 220V/380V, there must be
a power cut and must have two people working, if not cutting electricity, use a specific
plan for safety measures to avoid touching , short shock and electric shock were directed
by the Director, Deputy Director of the Company, the electricity of the district, district
electricity; Manager, Deputy Manager, Head of Technical Department, Deputy Head of
Technical Department.
Question 5:
What are the safety measures when cutting trees near the power line?
1) People who have not trained and checked, have no experience without directly cutting trees.
2) The direct commander must notify the employee of the working unit about the danger when
climbing trees.
3) Prohibiting cutting trees when there is a level 4 or higher, except for special cases when there
is an emergency order of the competent authority.
4) Prohibition of a series of plants and then spill by letting this tree spill the other. Prohibition on
the bean tree and the opposite side. To avoid the tree from pouring into the line, the rope must be
tied to the opposite side of the line.

5) When cutting the tree to cut the rotten tree first, when the bean tree must notify the people
around them.
6) When cutting trees, using a knife hilt in the wrist to avoid falling into others, the seat belt must
be tied to a safe branch.
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7) Must cut off the lines when cutting trees is capable of parking into the line.
8) Cut trees in a high -pressure line safety corridor to have a business voucher.
Question 6:
What are the safety measures when working on the lines that have cut off electricity but go
to the same column with the operating line?
1) The smallest distance between the nearest conductors of the two circuits is not less than the
regulation:
a) 35 kV or less - 3 m
b) 110 kV - 4 m
c) 220 kV - 6 m
For a voltage line up to 35kV, when the distance between the last 2 wires of the two circuits is
less than 3 m but not less than 2 m, allowing the work to climb on the column in the circuit cut
when the other circuit There is still electricity (except for lightning -proof cords) but must use the
insulating panels between the two circuits.
2) Must install the grounding for the line to work on it, every 500m placing a grounding set (at
least there must be two sets at the two ends of work).
3) Prohibit working when there is a level 4 or more wind, thick fog and night. Prohibiting the
conductor on the column, coil wall on the column, using a metal ruler.
4) The direct commander must check the right wire line, and must have the following types of
safety signs:
('' Stop! There is a deadly danger "," Note! Above there is electricity ")

Question 7:
What are the safety measures when working with high -voltage electrical appliances without
power cutting in the transformer station?
1) Based on the danger level of non-power-cutting jobs is divided into two main types:
a) External actions in barrier or outside safe distance from electric equipment are available.
b) Works near or in parts and equipment that are electricity but are not capable of shielding
endanger the worker.
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2) The work outside the fixed barrier or in the lower voltage of the station, the working unit does
not have to have a working card but must have a working order and after finishing, it must be
recorded in the operating diary. The work has done. Employees who do not have enough
electricity safety qualifications to enter the working station must have electrical safety supervisors
as prescribed in Clause 1, Article 27, Clause 1, Article 34 of this process.
3) The work that allows the opening of a safety net when the device still has electricity must have
a business voucher and ensure a safe distance according to the regulations, including:
a) Take transformer oil samples.
b) Carry out oil filter in large transformers operating.
c) Check the vibration of the female bar by manipulating.
d) Measure the current with a pliers.
e) Wipe the insulating porcelain from 35kV or less with specialized tools that have been
tested and tested periodically in accordance with current regulations.
4) The jobs in Clause 3, Article 52 are only conducted when the charged parts at the front of the
head or at the top of the head, the working people must stand on the floor or sturdy armor.
Question 8:
What are the safety measures when working with capacitors in the transformer station?
1) The system of electrical cabinets placed with the transformer station must set up a separate

capacitor of a chamber and build a wall separation with other equipment to prevent fire and
explosion.
2) When the cutting machine of the shear capacitor is only allowed to be closed after it has found
the cause and processed.
3) Close and cut high-voltage capacitors made by two people. Prohibit using isolation knife to
close, cut high -voltage capacitors and take oil samples when the capacitor is operating.
4) When cutting capacitors for repair, discharge must have a capacitor with a metal conductor
with a minimum cross section of 25 mm up to 250 mm and are allowed to be placed in the
insulating pole with qualified operating standards at the voltage Working of capacitors. If the

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capacitor has a separate protection of each bottle or group, it must be discharged separately from
each bottle or group.
5) When the residual charge discharge of the capacitor must have a limited resistance, then
discharge directly to the ground to avoid damage to the capacitor.
Question 9:
What are the safety measures when working with batteries in the transformer station?
1) In normal operation of the battery chamber must be locked, the key must be placed in the
prescribed place and only assigned to the person in charge of the battery room or those who are
allowed to check during working and checking.
2) Prohibition of smoking, using lighters, fireplaces in battery tanks, battery doors must clearly
propose '' battery chamber! Prohibition of fire - banning smoking. ''
3) Battery chamber must have enough fan and vent.
4) Do not allow furniture to prevent ventilation doors, paths between prices in the rules.
5) Must prepare neutralization in accordance with the battery system.
6) Safety measures when working, using and preparing acid:

a) Working with acids performed by professional people, transporting acid tanks must have
two people, pay attention to check the path first to avoid slippery, fall or spill the bottle.
b) On the walls of acid containers, containing acid solutions, distilled water must specify
each type with anti -acid paint.
c) Concentrated acid must be left in separate chambers, in addition to the acid, it is only
allowed to neutralize the solution; The acid must be in specialized plastic, glass or crockery
bottles with lids and straps.
d) When pouring the acid out of the tank, there must be vehicles to keep the bottle so that
it will not break down. Acid containers must be very dry and clean.
e) When preparing the acid into a solution, pouring small acid rays in the glass chopsticks
into the distilled water bottle and always stirring to radiate heat well.
f) Prohibit distilled water into the acid to prepare into a solution.
Question 10:
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What are the regulations on using safety straps when working on high?
1) Every day, workers before working on high must check their own safety strap by wearing them
and then tie the string into the solid object on the ground and bumped their legs and fell behind
to see the rope. Is there any abnormal phenomenon.
2) Must well preserve the safety strap, finish rolling must be neatly rolled, not to keep the moisture
low but must hang up or leave the high, dry, clean place.
3) Safety strap must be tested every 6 months by hanging weight or a specialized safety test
device. The weight of the old wire is 225 kg, the new wire is 300kg, the test time is 5 minutes,
before using, check the lock, hook, the only line to see if it is rusted or broken, if suspected, it
must be tried to be important quantity immediately.
4) After testing the safety strap, the test date must be recorded, the test weight is good and the
comments are good and bad in the seat belt monitoring book. At the same time, marking the tested

wire is still standard, only when the mark is used. The unused safety strap must be recorded and
canceled.
5) The production team is responsible for strictly managing the safety strap if the accident occurs
due to broken, broken hook or due to failure to try on time, the leader, captain, manager In charge
of the unit's safety is fully responsible.
Question 11:
What are the regulations on using mobile bars when working on high?
1) Regulations on structure and quality of mobile ladders:
a) Mobile ladder is a type of ladder made of bamboo, wood, iron, ... Materials made of
wooden ladders must be strong and dry.
b) The width of the ladder is at least 50 cm. (> = 50cm)
c) The distance between steps is evenly and not greater than 45 cm. (<= 45cm)
d) Turn on the ladder not to be paid by nails, first and last steps
e) Bamboo ladder must take steel wire tied, twisted firmly at both ends and between the
ladder.

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f) When connecting the ladder, it is necessary to use iron belt and bolt or use beautiful
wood, sturdy bamboo tiles with two ends of at least 1 meter long and use steel wire to twist
tightly, ensuring no wobbly.
g) The ladder must be used, not one, curved when working on it.
h) Must regularly check the ladder if it is not safe, it must be repaired immediately or
removed.
2) Regulations on working with mobile ladders:
a) In places where there is no scaffolding, it is allowed to work on a mobile ladder.
b) The length of the ladder must be suitable for height height to work.

c) There must be a person holding a ladder, on marble background, cement, smooth bricks,
lined with rubber ladders or wet sacks to avoid sliding. On the ground, the ground must be
concave at the foot of the ladder.
d) Standing at least 1 meter away from the body and must stand on the lower steps.
e) Under normal conditions, the ladder must be built with a vertical plane so that the
distance from the foot of the ladder to the vertical plane is equal to 1/4 of the length of the
ladder. For mobile ladders do not wear seat belts on the ladder.
f) When erecting the ladder, the round tube must use the wire to tie the head of the ladder.
g) Prohibit carrying heavy objects on the ladder, climb up the ladder at the same time and
stand on the ladder to move from one position to another.

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